stage.addEventListener(KeyboardEvent.KEY_DOWN, keyboardHandler);

$(function() {
    window.onkeydown = function(e) {
        switch(e.keyCode){
            case 37: // Arrow
            case 39: // Keys
            case 38: // ...
            case 40: // ...
                e.preventDefault();
            break;

            default: break;
        }
    };
});